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Original commit message from CVS:
Gdkpixbuf ported from 0.8 to 0.10 by Renato Filho <renato.filho@indt.org.br>. gst_loader and gdkpixbufanimation still need port.
This commit is contained in:
Edgard Lima 2006-02-24 19:51:29 +00:00
parent 96c1cd6e0a
commit 73a6055bdf
8 changed files with 546 additions and 505 deletions
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13
ChangeLog
View file

@ -1,3 +1,16 @@
2006-02-24 Edgard Lima <edgard.lima@indt.org.br>
* configure.ac:
* ext/Makefile.am:
* ext/gdk_pixbuf/Makefile.am:
* ext/gdk_pixbuf/gstgdkpixbuf.c:
* ext/gdk_pixbuf/gstgdkpixbuf.h:
* ext/gdk_pixbuf/pixbufscale.c:
* ext/gdk_pixbuf/pixbufscale.h:
Gdkpixbuf ported from 0.8 to 0.10 by
Renato Filho <renato.filho@indt.org.br>.
gst_loader and gdkpixbufanimation still need port.
2006-02-24 Michael Smith <msmith@fluendo.com>
* configure.ac:

10
configure.ac
View file

@ -232,6 +232,9 @@ if test "x$HAVE_GTK_22" = "xyes"; then
AC_SUBST(GTK_VERSION)
GTK_PREFIX=`$PKG_CONFIG --variable=prefix gdk-pixbuf-2.0`
AC_SUBST(GTK_BASE_DIR)
GDK_PIXBUF_LIBDIR=`$PKG_CONFIG --variable=libdir gdk-pixbuf-2.0`
GDK_PIXBUF_PREFIXDIR=`$PKG_CONFIG --variable=prefix gdk-pixbuf-2.0`
AC_SUBST(GTK_BASE_DIR)
else
PKG_CHECK_MODULES(GTK2, gtk+-2.0, HAVE_GTK_20=yes, HAVE_GTK_20=no)
fi
@ -399,6 +402,12 @@ GST_CHECK_FEATURE(GCONF, [GConf libraries], , [
AC_SUBST(GCONF_LIBS)
])
dnl *** GDK pixbuf ***
translit(dnm, m, l) AM_CONDITIONAL(USE_GDK_PIXBUF, true)
GST_CHECK_FEATURE(GDK_PIXBUF, [GDK pixbuf], gdkpixbufsrc, [
if test $HAVE_GTK_22 = "yes"; then HAVE_GDK_PIXBUF=yes; fi;
])
dnl *** HAL ***
translit(dnm, m, l) AM_CONDITIONAL(USE_HAL, true)
GST_CHECK_FEATURE(HAL, [HAL libraries], , [
@ -639,6 +648,7 @@ ext/dv/Makefile
ext/esd/Makefile
ext/flac/Makefile
ext/gconf/Makefile
ext/gdk_pixbuf/Makefile
ext/hal/Makefile
ext/ladspa/Makefile
ext/libcaca/Makefile

9
ext/Makefile.am
View file

@ -40,11 +40,11 @@ else
GCONF_DIR =
endif
# if USE_GDK_PIXBUF
# GDK_PIXBUF_DIR = gdk_pixbuf
# else
if USE_GDK_PIXBUF
GDK_PIXBUF_DIR = gdk_pixbuf
else
GDK_PIXBUF_DIR =
# endif
endif
if USE_HAL
HAL_DIR = hal
@ -141,6 +141,7 @@ DIST_SUBDIRS = \
esd \
flac \
gconf \
gdk_pixbuf \
hal \
jpeg \
ladspa \

39
ext/gdk_pixbuf/Makefile.am
View file

@ -1,30 +1,31 @@
plugin_LTLIBRARIES = libgstgdkpixbuf.la
libgstgdkpixbuf_la_SOURCES = gstgdkpixbuf.c pixbufscale.c
libgstgdkpixbuf_la_CFLAGS = $(GST_CFLAGS) $(GTK_CFLAGS)
libgstgdkpixbuf_la_LIBADD = $(GST_LIBS) $(GTK_LIBS)
libgstgdkpixbuf_la_CFLAGS = $(GST_CFLAGS) $(GTK_CFLAGS) $(GST_BASE_CFLAGS)
libgstgdkpixbuf_la_LIBADD = $(GTK_LIBS) $(GST_BASE_LIBS)
libgstgdkpixbuf_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
if HAVE_GDK_LOADERS
loaderdir = $(DESTDIR)$(GDK_PIXBUF_LOADER_DIR)
loader_LTLIBRARIES = gst_loader.la
install-data-hook:
if test -z "$(DESTDIR)" ; then \
$(mkinstalldirs) $(DESTDIR)$(GDK_PIXBUF_CONF_DIR) ; \
$(QUERYLOADERS) > $(DESTDIR)$(GDK_PIXBUF_CONF_DIR)/gdk-pixbuf.loaders ; \
fi
gst_loader_la_CFLAGS = $(GST_CFLAGS) $(GTK_CFLAGS) -DGDK_PIXBUF_ENABLE_BACKEND
gst_loader_la_SOURCES = \
gstgdkanimation.c \
gst_loader.c
gst_loader_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
gst_loader_la_LIBADD = $(GTK_LIBS) $(GST_LIBS)
else
#if
#loaderdir = $(DESTDIR)$(GDK_PIXBUF_LOADER_DIR)
#loader_LTLIBRARIES = gst_loader.la
#
#install-data-hook:
# if test -z "$(DESTDIR)" ; then \
# $(mkinstalldirs) $(DESTDIR)$(GDK_PIXBUF_CONF_DIR) ; \
# $(QUERYLOADERS) > $(DESTDIR)$(GDK_PIXBUF_CONF_DIR)/gdk-pixbuf.loaders ; \
# fi
#
#gst_loader_la_CFLAGS = $(GST_CFLAGS) $(GTK_CFLAGS) -DGDK_PIXBUF_ENABLE_BACKEND
#gst_loader_la_SOURCES = \
# gstgdkanimation.c \
# gst_loader.c
#gst_loader_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS) --avoid-version --module
#gst_loader_la_LIBADD = $(GTK_LIBS) $(GST_LIBS)
#else
install-data-hook:
true
endif
#endif
noinst_HEADERS = gstgdkpixbuf.h \
pixbufscale.h \

352
ext/gdk_pixbuf/gstgdkpixbuf.c
View file

@ -37,7 +37,7 @@ static GstElementDetails plugin_details = {
"GdkPixbuf image decoder",
"Codec/Decoder/Image",
"Decodes images in a video stream using GdkPixbuf",
"David A. Schleef <ds@schleef.org>",
"David A. Schleef <ds@schleef.org>, Renato Filho <renato.filho@indt.org.br>",
};
/* Filter signals and args */
@ -53,6 +53,8 @@ enum
ARG_SILENT
};
static GstStaticPadTemplate gst_gdk_pixbuf_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
@ -88,46 +90,53 @@ gboolean pixbufscale_init (GstPlugin * plugin);
static void gst_gdk_pixbuf_base_init (gpointer g_class);
static void gst_gdk_pixbuf_class_init (GstGdkPixbufClass * klass);
static void gst_gdk_pixbuf_init (GstGdkPixbuf * filter);
static void gst_gdk_pixbuf_init (GstGdkPixbuf * filter,
GstGdkPixbufClass * klass);
static void gst_gdk_pixbuf_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_gdk_pixbuf_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void gst_gdk_pixbuf_chain (GstPad * pad, GstData * _data);
static GstFlowReturn gst_gdk_pixbuf_chain (GstPad * pad, GstBuffer * buffer);
static gboolean gst_gdk_pixbuf_event (GstPad * pad, GstEvent * event);
#ifdef enable_typefind
static void gst_gdk_pixbuf_type_find (GstTypeFind * tf, gpointer ignore);
#endif
static GstElementClass *parent_class = NULL;
static GstPadLinkReturn
gst_gdk_pixbuf_sink_link (GstPad * pad, const GstCaps * caps)
GST_BOILERPLATE (GstGdkPixbuf, gst_gdk_pixbuf, GstElement, GST_TYPE_ELEMENT)
static gboolean gst_gdk_pixbuf_sink_setcaps (GstPad * pad, GstCaps * caps)
{
GstGdkPixbuf *filter;
const GValue *fps;
const GValue *framerate;
GstStructure *s;
filter = GST_GDK_PIXBUF (gst_pad_get_parent (pad));
g_return_val_if_fail (filter != NULL, GST_PAD_LINK_REFUSED);
g_return_val_if_fail (GST_IS_GDK_PIXBUF (filter), GST_PAD_LINK_REFUSED);
s = gst_caps_get_structure (caps, 0);
fps = gst_structure_get_value (gst_caps_get_structure (caps, 0), "framerate");
if (fps != NULL && GST_VALUE_HOLDS_FRACTION (fps)) {
filter->fps_n = gst_value_get_fraction_numerator (fps);
filter->fps_d = gst_value_get_fraction_denominator (fps);
} else
return GST_PAD_LINK_REFUSED;
filter->framerate_numerator = 0;
filter->framerate_denominator = 1;
if ((framerate = gst_structure_get_value (s, "framerate")) != NULL) {
filter->framerate_numerator = gst_value_get_fraction_numerator (framerate);
filter->framerate_denominator =
gst_value_get_fraction_denominator (framerate);
GST_DEBUG ("got framerate of %d/%d fps => packetized mode",
filter->framerate_numerator, filter->framerate_denominator);
}
return GST_PAD_LINK_OK;
return TRUE;
}
#if GDK_PIXBUF_MAJOR == 2 && GDK_PIXBUF_MINOR < 2
/* gdk-pixbuf prior to 2.2 didn't have gdk_pixbuf_get_formats().
* These are just the formats that gdk-pixbuf is known to support.
* But maybe not -- it may have been compiled without an external
* library. */
static GstCaps *
gst_gdk_pixbuf_get_capslist (void)
{
@ -162,7 +171,7 @@ gst_gdk_pixbuf_get_capslist (void)
return_caps = gst_caps_intersect (capslist,
gst_static_caps_get (&gst_gdk_pixbuf_sink_template.static_caps));
gst_caps_free (capslist);
gst_caps_unref (capslist);
return return_caps;
}
#endif
@ -179,30 +188,6 @@ gst_gdk_pixbuf_sink_getcaps (GstPad * pad)
return gst_gdk_pixbuf_get_capslist ();
}
GType
gst_gdk_pixbuf_get_type (void)
{
static GType plugin_type = 0;
if (!plugin_type) {
static const GTypeInfo plugin_info = {
sizeof (GstGdkPixbufClass),
gst_gdk_pixbuf_base_init,
NULL,
(GClassInitFunc) gst_gdk_pixbuf_class_init,
NULL,
NULL,
sizeof (GstGdkPixbuf),
0,
(GInstanceInitFunc) gst_gdk_pixbuf_init,
};
plugin_type = g_type_register_static (GST_TYPE_ELEMENT,
"GstGdkPixbuf", &plugin_info, 0);
}
return plugin_type;
}
static void
gst_gdk_pixbuf_base_init (gpointer g_class)
{
@ -227,161 +212,189 @@ gst_gdk_pixbuf_class_init (GstGdkPixbufClass * klass)
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
gobject_class->set_property = gst_gdk_pixbuf_set_property;
gobject_class->get_property = gst_gdk_pixbuf_get_property;
g_object_class_install_property (gobject_class, ARG_SILENT,
g_param_spec_boolean ("silent", "Silent", "Produce verbose output ?",
FALSE, G_PARAM_READWRITE));
gobject_class->set_property = gst_gdk_pixbuf_set_property;
gobject_class->get_property = gst_gdk_pixbuf_get_property;
}
static void
gst_gdk_pixbuf_init (GstGdkPixbuf * filter)
gst_gdk_pixbuf_init (GstGdkPixbuf * filter, GstGdkPixbufClass * klass)
{
filter->sinkpad =
gst_pad_new_from_template (gst_static_pad_template_get
(&gst_gdk_pixbuf_sink_template), "sink");
gst_pad_set_link_function (filter->sinkpad, gst_gdk_pixbuf_sink_link);
gst_pad_set_setcaps_function (filter->sinkpad, gst_gdk_pixbuf_sink_setcaps);
gst_pad_set_getcaps_function (filter->sinkpad, gst_gdk_pixbuf_sink_getcaps);
filter->srcpad =
gst_pad_new_from_template (gst_static_pad_template_get
(&gst_gdk_pixbuf_src_template), "src");
gst_pad_use_explicit_caps (filter->srcpad);
gst_pad_set_chain_function (filter->sinkpad,
(GstPadChainFunction) gst_gdk_pixbuf_chain);
gst_pad_set_event_function (filter->sinkpad, gst_gdk_pixbuf_event);
gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad);
gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad);
gst_pad_set_chain_function (filter->sinkpad, gst_gdk_pixbuf_chain);
GST_OBJECT_FLAG_SET (GST_ELEMENT (filter), GST_ELEMENT_EVENT_AWARE);
filter->srcpad = gst_pad_new_from_template (gst_static_pad_template_get
(&gst_gdk_pixbuf_src_template), "src");
gst_pad_use_fixed_caps (filter->srcpad);
gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad);
filter->last_timestamp = GST_CLOCK_TIME_NONE;
filter->pixbuf_loader = NULL;
}
static void
gst_gdk_pixbuf_chain (GstPad * pad, GstData * _data)
static GstFlowReturn
gst_gdk_pixbuf_flush (GstGdkPixbuf * filter)
{
GstBuffer *outbuf;
GdkPixbuf *pixbuf;
int y;
guint8 *out_pix;
guint8 *in_pix;
int in_rowstride;
GstFlowReturn ret;
GstCaps *caps = NULL;
pixbuf = gdk_pixbuf_loader_get_pixbuf (filter->pixbuf_loader);
if (pixbuf == NULL) {
GST_DEBUG ("error geting pixbuf");
return GST_FLOW_ERROR;
}
if (filter->image_size == 0) {
filter->width = gdk_pixbuf_get_width (pixbuf);
filter->height = gdk_pixbuf_get_height (pixbuf);
filter->rowstride = gdk_pixbuf_get_rowstride (pixbuf);
filter->image_size = filter->rowstride * filter->height;
if (gdk_pixbuf_get_rowstride (pixbuf) / filter->width == 4) {
caps = gst_caps_from_string (GST_VIDEO_CAPS_RGBA);
} else if (gdk_pixbuf_get_rowstride (pixbuf) / filter->width == 3) {
caps = gst_caps_from_string (GST_VIDEO_CAPS_RGB);
} else {
GST_ELEMENT_ERROR (filter, CORE, NEGOTIATION, (NULL),
("Bpp %d not supported", gdk_pixbuf_get_bits_per_sample (pixbuf)));
return GST_FLOW_ERROR;
}
gst_caps_set_simple (caps,
"width", G_TYPE_INT, filter->width,
"height", G_TYPE_INT, filter->height,
"framerate", GST_TYPE_FRACTION, filter->framerate_numerator,
filter->framerate_denominator, NULL);
GST_DEBUG ("Set size to %dx%d", filter->width, filter->height);
gst_pad_set_caps (filter->srcpad, caps);
gst_caps_unref (caps);
}
ret = gst_pad_alloc_buffer_and_set_caps (filter->srcpad,
GST_BUFFER_OFFSET_NONE,
filter->image_size, GST_PAD_CAPS (filter->srcpad), &outbuf);
if (ret != GST_FLOW_OK) {
GST_DEBUG ("Failed to create outbuffer - %d", ret);
return GST_FLOW_ERROR;
}
gst_caps_unref (caps);
caps = gst_pad_get_negotiated_caps (filter->srcpad);
GST_DEBUG ("Caps negotiated %s", gst_caps_to_string (caps));
gst_caps_unref (caps);
GST_BUFFER_TIMESTAMP (outbuf) = filter->last_timestamp;
GST_BUFFER_DURATION (outbuf) = GST_CLOCK_TIME_NONE;
in_pix = gdk_pixbuf_get_pixels (pixbuf);
in_rowstride = gdk_pixbuf_get_rowstride (pixbuf);
out_pix = GST_BUFFER_DATA (outbuf);
for (y = 0; y < filter->height; y++) {
memcpy (out_pix, in_pix, filter->rowstride);
in_pix += in_rowstride;
out_pix += filter->rowstride;
}
GST_DEBUG ("pushing... %d bytes", GST_BUFFER_SIZE (outbuf));
return gst_pad_push (filter->srcpad, outbuf);
}
static gboolean
gst_gdk_pixbuf_event (GstPad * pad, GstEvent * event)
{
GstFlowReturn res = GST_FLOW_OK;
gboolean ret = TRUE;
GstGdkPixbuf *pixbuf;
pixbuf = GST_GDK_PIXBUF (gst_pad_get_parent (pad));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_EOS:
gdk_pixbuf_loader_close (pixbuf->pixbuf_loader, NULL);
res = gst_gdk_pixbuf_flush (pixbuf);
g_object_unref (G_OBJECT (pixbuf->pixbuf_loader));
break;
case GST_EVENT_NEWSEGMENT:
case GST_EVENT_FLUSH_STOP:
if (pixbuf->pixbuf_loader != NULL) {
gdk_pixbuf_loader_close (pixbuf->pixbuf_loader, NULL);
g_object_unref (G_OBJECT (pixbuf->pixbuf_loader));
pixbuf->pixbuf_loader = NULL;
}
break;
default:
break;
}
if (res == GST_FLOW_OK) {
ret = gst_pad_event_default (pad, event);
} else {
ret = FALSE;
}
gst_object_unref (pixbuf);
return ret;
}
static GstFlowReturn
gst_gdk_pixbuf_chain (GstPad * pad, GstBuffer * buf)
{
GstBuffer *buf = GST_BUFFER (_data);
GstGdkPixbuf *filter;
GstFlowReturn ret = GST_FLOW_OK;
GError *error = NULL;
gboolean push_buffer = FALSE;
gboolean dump_buffer = FALSE;
gboolean got_eos = FALSE;
GstClockTime timestamp;
GST_DEBUG ("gst_gdk_pixbuf_chain");
filter = GST_GDK_PIXBUF (gst_pad_get_parent (pad));
g_return_if_fail (GST_IS_PAD (pad));
g_return_if_fail (buf != NULL);
timestamp = GST_BUFFER_TIMESTAMP (buf);
filter = GST_GDK_PIXBUF (GST_OBJECT_PARENT (pad));
g_return_if_fail (GST_IS_GDK_PIXBUF (filter));
if (GST_IS_EVENT (_data)) {
GstEvent *event = GST_EVENT (buf);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_EOS:
push_buffer = TRUE;
got_eos = TRUE;
break;
case GST_EVENT_DISCONTINUOUS:
dump_buffer = TRUE;
break;
default:
gst_pad_event_default (pad, event);
return;
}
if (GST_CLOCK_TIME_IS_VALID (timestamp)) {
filter->last_timestamp = timestamp;
}
if (filter->last_timestamp != GST_BUFFER_TIMESTAMP (buf)) {
push_buffer = TRUE;
if (filter->pixbuf_loader == NULL) {
filter->pixbuf_loader = gdk_pixbuf_loader_new ();
}
if (push_buffer) {
if (filter->pixbuf_loader != NULL) {
GstBuffer *outbuf;
GdkPixbuf *pixbuf;
GError *error = NULL;
if (!gdk_pixbuf_loader_close (filter->pixbuf_loader, &error)) {
GST_ELEMENT_ERROR (filter, LIBRARY, SHUTDOWN, (NULL), (error->message));
g_error_free (error);
return;
}
pixbuf = gdk_pixbuf_loader_get_pixbuf (filter->pixbuf_loader);
if (filter->image_size == 0) {
GstCaps *caps;
filter->width = gdk_pixbuf_get_width (pixbuf);
filter->height = gdk_pixbuf_get_height (pixbuf);
/* gdk_pixbuf likes to pad rowstride to 4 byte boundaries which we can't do
* at the moment
*/
filter->rowstride = filter->width * 3;
filter->image_size = filter->rowstride * filter->height;
caps = gst_caps_copy (gst_pad_get_pad_template_caps (filter->srcpad));
gst_caps_set_simple (caps,
"width", G_TYPE_INT, filter->width,
"height", G_TYPE_INT, filter->height,
"framerate", G_TYPE_DOUBLE, filter->framerate, NULL);
gst_pad_set_explicit_caps (filter->srcpad, caps);
}
outbuf =
gst_pad_alloc_buffer_and_set_caps (filter->srcpad,
GST_BUFFER_OFFSET_NONE, filter->image_size);
GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buf);
GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (buf);
{
int y;
guint8 *out_pix;
guint8 *in_pix;
int in_rowstride;
in_pix = gdk_pixbuf_get_pixels (pixbuf);
in_rowstride = gdk_pixbuf_get_rowstride (pixbuf);
out_pix = GST_BUFFER_DATA (outbuf);
for (y = 0; y < filter->height; y++) {
memcpy (out_pix, in_pix, filter->rowstride);
in_pix += in_rowstride;
out_pix += filter->rowstride;
}
}
gst_pad_push (filter->srcpad, GST_DATA (outbuf));
g_object_unref (G_OBJECT (filter->pixbuf_loader));
filter->pixbuf_loader = NULL;
dump_buffer = FALSE;
}
GST_DEBUG ("Writing buffer size %d", GST_BUFFER_SIZE (buf));
if (gdk_pixbuf_loader_write (filter->pixbuf_loader, GST_BUFFER_DATA (buf),
GST_BUFFER_SIZE (buf), &error) == FALSE) {
GST_DEBUG ("gst_gdk_pixbuf_chain ERROR: %s", error->message);
ret = GST_FLOW_ERROR;
goto need_more_data;
}
if (dump_buffer) {
if (filter->pixbuf_loader != NULL) {
gdk_pixbuf_loader_close (filter->pixbuf_loader, NULL);
g_object_unref (G_OBJECT (filter->pixbuf_loader));
filter->pixbuf_loader = NULL;
}
}
if (GST_IS_BUFFER (_data)) {
if (filter->pixbuf_loader == NULL) {
filter->pixbuf_loader = gdk_pixbuf_loader_new ();
filter->last_timestamp = GST_BUFFER_TIMESTAMP (buf);
}
gdk_pixbuf_loader_write (filter->pixbuf_loader, GST_BUFFER_DATA (buf),
GST_BUFFER_SIZE (buf), &error);
gst_buffer_unref (buf);
}
if (got_eos) {
gst_pad_event_default (pad, GST_EVENT (_data));
}
need_more_data:
gst_object_unref (filter);
return ret;
}
static void
@ -395,7 +408,7 @@ gst_gdk_pixbuf_set_property (GObject * object, guint prop_id,
switch (prop_id) {
case ARG_SILENT:
//filter->silent = g_value_get_boolean (value);
/* filter->silent = g_value_get_boolean (value); */
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
@ -414,7 +427,7 @@ gst_gdk_pixbuf_get_property (GObject * object, guint prop_id,
switch (prop_id) {
case ARG_SILENT:
//g_value_set_boolean (value, filter->silent);
/* g_value_set_boolean (value, filter->silent); */
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
@ -496,10 +509,11 @@ plugin_init (GstPlugin * plugin)
return TRUE;
}
/* this is the structure that gst-register looks for
* so keep the name plugin_desc, or you cannot get your plug-in registered */
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"gdkpixbuf",
"GDK Pixbuf decoder & scaler", plugin_init, VERSION, "LGPL",
GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
"GDK Pixbuf decoder & scaler",
plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)

14
ext/gdk_pixbuf/gstgdkpixbuf.h
View file

@ -28,15 +28,15 @@
G_BEGIN_DECLS
/* #define's don't like whitespacey bits */
#define GST_TYPE_GDK_PIXBUF \
#define GST_TYPE_GDK_PIXBUF \
(gst_gdk_pixbuf_get_type())
#define GST_GDK_PIXBUF(obj) \
#define GST_GDK_PIXBUF(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_GDK_PIXBUF,GstGdkPixbuf))
#define GST_GDK_PIXBUF_CLASS(klass) \
#define GST_GDK_PIXBUF_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_GDK_PIXBUF,GstGdkPixbuf))
#define GST_IS_GDK_PIXBUF(obj) \
#define GST_IS_GDK_PIXBUF(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_GDK_PIXBUF))
#define GST_IS_GDK_PIXBUF_CLASS(obj) \
#define GST_IS_GDK_PIXBUF_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_GDK_PIXBUF))
typedef struct _GstGdkPixbuf GstGdkPixbuf;
@ -56,8 +56,8 @@ struct _GstGdkPixbuf
int rowstride;
unsigned int image_size;
gint fps_n;
gint fps_d;
gint framerate_numerator;
gint framerate_denominator;
};
struct _GstGdkPixbufClass

585
ext/gdk_pixbuf/pixbufscale.c
View file

@ -36,7 +36,6 @@
#define GST_RGB24_SIZE(width,height) ((height)*GST_RGB24_ROWSTRIDE(width))
/* debug variable definition */
GST_DEBUG_CATEGORY (pixbufscale_debug);
#define GST_CAT_DEFAULT pixbufscale_debug
@ -45,7 +44,9 @@ static GstElementDetails pixbufscale_details =
GST_ELEMENT_DETAILS ("Gdk Pixbuf scaler",
"Filter/Effect/Video",
"Resizes video",
"Jan Schmidt <thaytan@mad.scientist.com>\nWim Taymans <wim.taymans@chello.be>");
"Jan Schmidt <thaytan@mad.scientist.com>\n"
"Wim Taymans <wim.taymans@chello.be>\n"
"Renato Filho <renato.filho@indt.org.br>");
/* GstPixbufScale signals and args */
enum
@ -81,10 +82,10 @@ gst_pixbufscale_method_get_type (void)
{
static GType pixbufscale_method_type = 0;
static GEnumValue pixbufscale_methods[] = {
{GST_PIXBUFSCALE_NEAREST, "Nearest Neighbour", "nearest"},
{GST_PIXBUFSCALE_TILES, "Tiles", "tiles"},
{GST_PIXBUFSCALE_BILINEAR, "Bilinear", "bilinear"},
{GST_PIXBUFSCALE_HYPER, "Hyper", "hyper"},
{GST_PIXBUFSCALE_NEAREST, "0", "Nearest Neighbour"},
{GST_PIXBUFSCALE_TILES, "1", "Tiles"},
{GST_PIXBUFSCALE_BILINEAR, "2", "Bilinear"},
{GST_PIXBUFSCALE_HYPER, "3", "Hyper"},
{0, NULL, NULL},
};
@ -97,46 +98,33 @@ gst_pixbufscale_method_get_type (void)
static void gst_pixbufscale_base_init (gpointer g_class);
static void gst_pixbufscale_class_init (GstPixbufScaleClass * klass);
static void gst_pixbufscale_init (GstPixbufScale * pixbufscale);
static gboolean gst_pixbufscale_handle_src_event (GstPad * pad,
GstEvent * event);
static void gst_pixbufscale_init (GstPixbufScale * pixbufscale,
GstPixbufScaleClass * kclass);
static void gst_pixbufscale_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_pixbufscale_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void gst_pixbufscale_chain (GstPad * pad, GstData * _data);
static GstCaps *gst_pixbufscale_transform_caps (GstBaseTransform * trans,
GstPadDirection direction, GstCaps * caps);
static gboolean gst_pixbufscale_set_caps (GstBaseTransform * trans,
GstCaps * in, GstCaps * out);
static gboolean gst_pixbufscale_get_unit_size (GstBaseTransform * trans,
GstCaps * caps, guint * size);
static void gst_pixbufscale_fixate_caps (GstBaseTransform * base,
GstPadDirection direction, GstCaps * caps, GstCaps * othercaps);
static GstFlowReturn gst_pixbufscale_transform (GstBaseTransform * trans,
GstBuffer * in, GstBuffer * out);
static gboolean gst_pixbufscale_handle_src_event (GstPad * pad,
GstEvent * event);
static GstElementClass *parent_class = NULL;
GType
gst_pixbufscale_get_type (void)
{
static GType pixbufscale_type = 0;
static gboolean parse_caps (GstCaps * caps, gint * width, gint * height);
if (!pixbufscale_type) {
static const GTypeInfo pixbufscale_info = {
sizeof (GstPixbufScaleClass),
gst_pixbufscale_base_init,
NULL,
(GClassInitFunc) gst_pixbufscale_class_init,
NULL,
NULL,
sizeof (GstPixbufScale),
0,
(GInstanceInitFunc) gst_pixbufscale_init,
};
GST_BOILERPLATE (GstPixbufScale, gst_pixbufscale, GstBaseTransform,
GST_TYPE_BASE_TRANSFORM)
pixbufscale_type =
g_type_register_static (GST_TYPE_ELEMENT, "GstPixbufScale",
&pixbufscale_info, 0);
}
return pixbufscale_type;
}
static void
gst_pixbufscale_base_init (gpointer g_class)
static void gst_pixbufscale_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
@ -151,279 +139,45 @@ static void
gst_pixbufscale_class_init (GstPixbufScaleClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
GstBaseTransformClass *trans_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
trans_class = (GstBaseTransformClass *) klass;
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_METHOD,
gobject_class->set_property = gst_pixbufscale_set_property;
gobject_class->get_property = gst_pixbufscale_get_property;
g_object_class_install_property (gobject_class,
ARG_METHOD,
g_param_spec_enum ("method", "method", "method",
GST_TYPE_PIXBUFSCALE_METHOD, GST_PIXBUFSCALE_BILINEAR,
G_PARAM_READWRITE));
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
trans_class->transform_caps =
GST_DEBUG_FUNCPTR (gst_pixbufscale_transform_caps);
trans_class->set_caps = GST_DEBUG_FUNCPTR (gst_pixbufscale_set_caps);
trans_class->get_unit_size =
GST_DEBUG_FUNCPTR (gst_pixbufscale_get_unit_size);
trans_class->transform = GST_DEBUG_FUNCPTR (gst_pixbufscale_transform);
trans_class->fixate_caps = GST_DEBUG_FUNCPTR (gst_pixbufscale_fixate_caps);
trans_class->passthrough_on_same_caps = TRUE;
gobject_class->set_property = gst_pixbufscale_set_property;
gobject_class->get_property = gst_pixbufscale_get_property;
}
static GstCaps *
gst_pixbufscale_getcaps (GstPad * pad)
{
GstPixbufScale *pixbufscale;
GstCaps *othercaps;
GstCaps *caps;
GstPad *otherpad;
int i;
pixbufscale = GST_PIXBUFSCALE (gst_pad_get_parent (pad));
otherpad = (pad == pixbufscale->srcpad) ? pixbufscale->sinkpad :
pixbufscale->srcpad;
othercaps = gst_pad_get_allowed_caps (otherpad);
caps = gst_caps_intersect (othercaps, gst_pad_get_pad_template_caps (pad));
gst_caps_free (othercaps);
for (i = 0; i < gst_caps_get_size (caps); i++) {
GstStructure *structure = gst_caps_get_structure (caps, i);
gst_structure_set (structure,
"width", GST_TYPE_INT_RANGE, 16, 4096,
"height", GST_TYPE_INT_RANGE, 16, 4096, NULL);
gst_structure_remove_field (structure, "pixel-aspect-ratio");
}
GST_DEBUG ("getcaps are: %" GST_PTR_FORMAT, caps);
return caps;
}
static GstPadLinkReturn
gst_pixbufscale_link (GstPad * pad, const GstCaps * caps)
{
GstPixbufScale *pixbufscale;
GstPadLinkReturn ret;
GstPad *otherpad;
GstStructure *structure;
int height, width;
gchar *caps_string;
caps_string = gst_caps_to_string (caps);
GST_DEBUG ("gst_pixbufscale_link %s\n", caps_string);
g_free (caps_string);
pixbufscale = GST_PIXBUFSCALE (gst_pad_get_parent (pad));
otherpad = (pad == pixbufscale->srcpad) ? pixbufscale->sinkpad :
pixbufscale->srcpad;
structure = gst_caps_get_structure (caps, 0);
ret = gst_structure_get_int (structure, "width", &width);
ret &= gst_structure_get_int (structure, "height", &height);
ret = gst_pad_try_set_caps (otherpad, caps);
if (ret == GST_PAD_LINK_OK) {
/* cool, we can use passthru */
pixbufscale->to_width = width;
pixbufscale->to_height = height;
pixbufscale->from_width = width;
pixbufscale->from_height = height;
pixbufscale->from_buf_size = GST_RGB24_SIZE (width, height);
pixbufscale->to_buf_size = GST_RGB24_SIZE (width, height);
pixbufscale->from_stride = GST_RGB24_ROWSTRIDE (width);
pixbufscale->to_stride = GST_RGB24_ROWSTRIDE (width);
pixbufscale->inited = TRUE;
return GST_PAD_LINK_OK;
}
if (gst_pad_is_negotiated (otherpad)) {
GstCaps *newcaps = gst_caps_copy (caps);
if (pad == pixbufscale->srcpad) {
gst_caps_set_simple (newcaps,
"width", G_TYPE_INT, pixbufscale->from_width,
"height", G_TYPE_INT, pixbufscale->from_height, NULL);
} else {
gst_caps_set_simple (newcaps,
"width", G_TYPE_INT, pixbufscale->to_width,
"height", G_TYPE_INT, pixbufscale->to_height, NULL);
}
ret = gst_pad_try_set_caps (otherpad, newcaps);
if (GST_PAD_LINK_FAILED (ret)) {
return GST_PAD_LINK_REFUSED;
}
}
pixbufscale->passthru = FALSE;
if (pad == pixbufscale->srcpad) {
pixbufscale->to_width = width;
pixbufscale->to_height = height;
} else {
pixbufscale->from_width = width;
pixbufscale->from_height = height;
}
if (gst_pad_is_negotiated (otherpad)) {
pixbufscale->from_buf_size =
GST_RGB24_SIZE (pixbufscale->from_width, pixbufscale->from_height);
pixbufscale->to_buf_size =
GST_RGB24_SIZE (pixbufscale->to_width, pixbufscale->to_height);
pixbufscale->from_stride = GST_RGB24_ROWSTRIDE (pixbufscale->from_width);
pixbufscale->to_stride = GST_RGB24_ROWSTRIDE (pixbufscale->to_width);
pixbufscale->inited = TRUE;
}
return GST_PAD_LINK_OK;
parent_class = g_type_class_peek_parent (klass);
}
static void
gst_pixbufscale_init (GstPixbufScale * pixbufscale)
gst_pixbufscale_init (GstPixbufScale * pixbufscale,
GstPixbufScaleClass * kclass)
{
GST_DEBUG_OBJECT (pixbufscale, "_init");
pixbufscale->sinkpad =
gst_pad_new_from_template (gst_static_pad_template_get
(&gst_pixbufscale_sink_template), "sink");
gst_element_add_pad (GST_ELEMENT (pixbufscale), pixbufscale->sinkpad);
gst_pad_set_chain_function (pixbufscale->sinkpad, gst_pixbufscale_chain);
gst_pad_set_link_function (pixbufscale->sinkpad, gst_pixbufscale_link);
gst_pad_set_getcaps_function (pixbufscale->sinkpad, gst_pixbufscale_getcaps);
GstBaseTransform *trans = GST_BASE_TRANSFORM (pixbufscale);
pixbufscale->srcpad =
gst_pad_new_from_template (gst_static_pad_template_get
(&gst_pixbufscale_src_template), "src");
gst_element_add_pad (GST_ELEMENT (pixbufscale), pixbufscale->srcpad);
gst_pad_set_event_function (pixbufscale->srcpad,
gst_pixbufscale_handle_src_event);
gst_pad_set_link_function (pixbufscale->srcpad, gst_pixbufscale_link);
gst_pad_set_getcaps_function (pixbufscale->srcpad, gst_pixbufscale_getcaps);
pixbufscale->inited = FALSE;
gst_pad_set_event_function (trans->srcpad, gst_pixbufscale_handle_src_event);
pixbufscale->method = GST_PIXBUFSCALE_TILES;
pixbufscale->gdk_method = GDK_INTERP_TILES;
}
static gboolean
gst_pixbufscale_handle_src_event (GstPad * pad, GstEvent * event)
{
GstPixbufScale *pixbufscale;
double a;
GstStructure *structure;
GstEvent *new_event;
pixbufscale = GST_PIXBUFSCALE (gst_pad_get_parent (pad));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_NAVIGATION:
structure = gst_structure_copy (event->event_data.structure.structure);
if (gst_structure_get_double (event->event_data.structure.structure,
"pointer_x", &a)) {
gst_structure_set (structure, "pointer_x", G_TYPE_DOUBLE,
a * pixbufscale->from_width / pixbufscale->to_width, NULL);
}
if (gst_structure_get_double (event->event_data.structure.structure,
"pointer_y", &a)) {
gst_structure_set (structure, "pointer_y", G_TYPE_DOUBLE,
a * pixbufscale->from_height / pixbufscale->to_height, NULL);
}
gst_event_unref (event);
new_event = gst_event_new (GST_EVENT_NAVIGATION);
new_event->event_data.structure.structure = structure;
return gst_pad_event_default (pad, new_event);
break;
default:
return gst_pad_event_default (pad, event);
break;
}
}
static void
pixbufscale_scale (GstPixbufScale * scale, unsigned char *dest,
unsigned char *src)
{
GdkPixbuf *src_pixbuf, *dest_pixbuf;
src_pixbuf = gdk_pixbuf_new_from_data
(src, GDK_COLORSPACE_RGB, FALSE,
8, scale->from_width, scale->from_height,
GST_RGB24_ROWSTRIDE (scale->from_width), NULL, NULL);
dest_pixbuf = gdk_pixbuf_new_from_data
(dest, GDK_COLORSPACE_RGB, FALSE,
8, scale->to_width, scale->to_height,
GST_RGB24_ROWSTRIDE (scale->to_width), NULL, NULL);
gdk_pixbuf_scale (src_pixbuf, dest_pixbuf, 0, 0, scale->to_width,
scale->to_height, 0, 0,
(double) scale->to_width / scale->from_width,
(double) scale->to_height / scale->from_height, scale->gdk_method);
dest_pixbuf = gdk_pixbuf_scale_simple
(src_pixbuf, scale->to_width, scale->to_height, scale->gdk_method);
g_object_unref (src_pixbuf);
g_object_unref (dest_pixbuf);
}
static void
gst_pixbufscale_chain (GstPad * pad, GstData * _data)
{
GstBuffer *buf = GST_BUFFER (_data);
GstPixbufScale *pixbufscale;
guchar *data;
gulong size;
GstBuffer *outbuf;
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_PAD (pad));
g_return_if_fail (buf != NULL);
pixbufscale = GST_PIXBUFSCALE (gst_pad_get_parent (pad));
g_return_if_fail (pixbufscale->inited);
data = GST_BUFFER_DATA (buf);
size = GST_BUFFER_SIZE (buf);
if (pixbufscale->passthru) {
GST_LOG_OBJECT (pixbufscale, "passing through buffer of %ld bytes in '%s'",
size, GST_OBJECT_NAME (pixbufscale));
gst_pad_push (pixbufscale->srcpad, GST_DATA (buf));
return;
}
GST_LOG_OBJECT (pixbufscale, "got buffer of %ld bytes in '%s'", size,
GST_OBJECT_NAME (pixbufscale));
GST_LOG_OBJECT (pixbufscale,
"size=%ld from=%dx%d to=%dx%d fromsize=%ld (should be %d) tosize=%d",
size, pixbufscale->from_width, pixbufscale->from_height,
pixbufscale->to_width, pixbufscale->to_height, size,
pixbufscale->from_buf_size, pixbufscale->to_buf_size);
if (size != pixbufscale->from_buf_size) {
GST_ERROR ("Incoming RGB data is %d bytes (expected: %d bytes) (%dx%d)\n",
size, pixbufscale->from_buf_size, pixbufscale->from_width,
pixbufscale->from_height);
return;
}
outbuf = gst_pad_alloc_buffer_and_set_caps (pixbufscale->srcpad,
GST_BUFFER_OFFSET_NONE, pixbufscale->to_buf_size);
gst_buffer_stamp (outbuf, buf);
pixbufscale_scale (pixbufscale, GST_BUFFER_DATA (outbuf), data);
GST_DEBUG_OBJECT (pixbufscale, "pushing buffer of %d bytes in '%s'",
GST_BUFFER_SIZE (outbuf), GST_OBJECT_NAME (pixbufscale));
gst_pad_push (pixbufscale->srcpad, GST_DATA (outbuf));
gst_buffer_unref (buf);
}
static void
gst_pixbufscale_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
@ -476,6 +230,255 @@ gst_pixbufscale_get_property (GObject * object, guint prop_id, GValue * value,
}
static GstCaps *
gst_pixbufscale_transform_caps (GstBaseTransform * trans,
GstPadDirection direction, GstCaps * caps)
{
GstPixbufScale *pixbufscale;
GstCaps *ret;
int i;
pixbufscale = GST_PIXBUFSCALE (trans);
ret = gst_caps_copy (caps);
for (i = 0; i < gst_caps_get_size (ret); i++) {
GstStructure *structure = gst_caps_get_structure (ret, i);
gst_structure_set (structure,
"width", GST_TYPE_INT_RANGE, 16, 4096,
"height", GST_TYPE_INT_RANGE, 16, 4096, NULL);
gst_structure_remove_field (structure, "pixel-aspect-ratio");
}
GST_DEBUG_OBJECT (trans, "returning caps: %", ret);
return ret;
}
static gboolean
parse_caps (GstCaps * caps, gint * width, gint * height)
{
gboolean ret;
GstStructure *structure;
structure = gst_caps_get_structure (caps, 0);
ret = gst_structure_get_int (structure, "width", width);
ret &= gst_structure_get_int (structure, "height", height);
return ret;
}
static gboolean
gst_pixbufscale_set_caps (GstBaseTransform * trans, GstCaps * in, GstCaps * out)
{
GstPixbufScale *pixbufscale;
gboolean ret;
pixbufscale = GST_PIXBUFSCALE (trans);
ret = parse_caps (in, &pixbufscale->from_width, &pixbufscale->from_height);
ret &= parse_caps (out, &pixbufscale->to_width, &pixbufscale->to_height);
if (!ret)
goto done;
pixbufscale->from_stride = GST_ROUND_UP_4 (pixbufscale->from_width * 3);
pixbufscale->from_buf_size =
pixbufscale->from_stride * pixbufscale->from_height;
pixbufscale->to_stride = GST_ROUND_UP_4 (pixbufscale->to_width * 3);
pixbufscale->to_buf_size = pixbufscale->to_stride * pixbufscale->to_height;
GST_DEBUG_OBJECT (pixbufscale, "from=%dx%d, size %d -> to=%dx%d, size %d",
pixbufscale->from_width, pixbufscale->from_height,
pixbufscale->from_buf_size, pixbufscale->to_width, pixbufscale->to_height,
pixbufscale->to_buf_size);
done:
return ret;
}
static gboolean
gst_pixbufscale_get_unit_size (GstBaseTransform * trans,
GstCaps * caps, guint * size)
{
GstPixbufScale *pixbufscale;
gint width, height;
g_return_val_if_fail (size, FALSE);
pixbufscale = GST_PIXBUFSCALE (trans);
if (!parse_caps (caps, &width, &height))
return FALSE;
*size = GST_ROUND_UP_4 (width * 3) * height;
return TRUE;
}
static void
gst_pixbufscale_fixate_caps (GstBaseTransform * base, GstPadDirection direction,
GstCaps * caps, GstCaps * othercaps)
{
GstStructure *ins, *outs;
const GValue *from_par, *to_par;
g_return_if_fail (gst_caps_is_fixed (caps));
GST_DEBUG_OBJECT (base, "trying to fixate othercaps %" GST_PTR_FORMAT
" based on caps %" GST_PTR_FORMAT, othercaps, caps);
ins = gst_caps_get_structure (caps, 0);
outs = gst_caps_get_structure (othercaps, 0);
from_par = gst_structure_get_value (ins, "pixel-aspect-ratio");
to_par = gst_structure_get_value (outs, "pixel-aspect-ratio");
if (from_par && to_par) {
GValue to_ratio = { 0, }; /* w/h of output video */
int from_w, from_h, from_par_n, from_par_d, to_par_n, to_par_d;
int count = 0, w = 0, h = 0, num, den;
/* if both width and height are already fixed, we can't do anything
* * about it anymore */
if (gst_structure_get_int (outs, "width", &w))
++count;
if (gst_structure_get_int (outs, "height", &h))
++count;
if (count == 2) {
GST_DEBUG_OBJECT (base, "dimensions already set to %dx%d, not fixating",
w, h);
return;
}
gst_structure_get_int (ins, "width", &from_w);
gst_structure_get_int (ins, "height", &from_h);
from_par_n = gst_value_get_fraction_numerator (from_par);
from_par_d = gst_value_get_fraction_denominator (from_par);
to_par_n = gst_value_get_fraction_numerator (to_par);
to_par_d = gst_value_get_fraction_denominator (to_par);
g_value_init (&to_ratio, GST_TYPE_FRACTION);
gst_value_set_fraction (&to_ratio, from_w * from_par_n * to_par_d,
from_h * from_par_d * to_par_n);
num = gst_value_get_fraction_numerator (&to_ratio);
den = gst_value_get_fraction_denominator (&to_ratio);
GST_DEBUG_OBJECT (base,
"scaling input with %dx%d and PAR %d/%d to output PAR %d/%d",
from_w, from_h, from_par_n, from_par_d, to_par_n, to_par_d);
GST_DEBUG_OBJECT (base,
"resulting output should respect ratio of %d/%d", num, den);
/* now find a width x height that respects this display ratio.
* * prefer those that have one of w/h the same as the incoming video
* * using wd / hd = num / den */
/* start with same height, because of interlaced video */
/* check hd / den is an integer scale factor, and scale wd with the PAR */
if (from_h % den == 0) {
GST_DEBUG_OBJECT (base, "keeping video height");
h = from_h;
w = h * num / den;
} else if (from_w % num == 0) {
GST_DEBUG_OBJECT (base, "keeping video width");
w = from_w;
h = w * den / num;
} else {
GST_DEBUG_OBJECT (base, "approximating but keeping video height");
h = from_h;
w = h * num / den;
}
GST_DEBUG_OBJECT (base, "scaling to %dx%d", w, h);
/* now fixate */
gst_structure_fixate_field_nearest_int (outs, "width", w);
gst_structure_fixate_field_nearest_int (outs, "height", h);
} else {
gint width, height;
if (gst_structure_get_int (ins, "width", &width)) {
if (gst_structure_has_field (outs, "width")) {
gst_structure_fixate_field_nearest_int (outs, "width", width);
}
}
if (gst_structure_get_int (ins, "height", &height)) {
if (gst_structure_has_field (outs, "height")) {
gst_structure_fixate_field_nearest_int (outs, "height", height);
}
}
}
GST_DEBUG_OBJECT (base, "fixated othercaps to %" GST_PTR_FORMAT, othercaps);
}
static GstFlowReturn
gst_pixbufscale_transform (GstBaseTransform * trans,
GstBuffer * in, GstBuffer * out)
{
GstPixbufScale *scale;
GdkPixbuf *src_pixbuf, *dest_pixbuf;
scale = GST_PIXBUFSCALE (trans);
src_pixbuf =
gdk_pixbuf_new_from_data (GST_BUFFER_DATA (in), GDK_COLORSPACE_RGB, FALSE,
8, scale->from_width, scale->from_height,
GST_RGB24_ROWSTRIDE (scale->from_width), NULL, NULL);
dest_pixbuf =
gdk_pixbuf_new_from_data (GST_BUFFER_DATA (out), GDK_COLORSPACE_RGB,
FALSE, 8, scale->to_width, scale->to_height,
GST_RGB24_ROWSTRIDE (scale->to_width), NULL, NULL);
gdk_pixbuf_scale (src_pixbuf, dest_pixbuf, 0, 0,
scale->to_width,
scale->to_height, 0, 0,
(double) scale->to_width / scale->from_width,
(double) scale->to_height / scale->from_height, scale->gdk_method);
g_object_unref (src_pixbuf);
g_object_unref (dest_pixbuf);
return GST_FLOW_OK;
}
static gboolean
gst_pixbufscale_handle_src_event (GstPad * pad, GstEvent * event)
{
GstPixbufScale *pixbufscale;
gboolean ret;
double a;
GstStructure *structure;
pixbufscale = GST_PIXBUFSCALE (gst_pad_get_parent (pad));
GST_DEBUG_OBJECT (pixbufscale, "handling %s event",
GST_EVENT_TYPE_NAME (event));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_NAVIGATION:
event =
GST_EVENT (gst_mini_object_make_writable (GST_MINI_OBJECT (event)));
structure = (GstStructure *) gst_event_get_structure (event);
if (gst_structure_get_double (structure, "pointer_x", &a)) {
gst_structure_set (structure, "pointer_x", G_TYPE_DOUBLE,
a * pixbufscale->from_width / pixbufscale->to_width, NULL);
}
if (gst_structure_get_double (structure, "pointer_y", &a)) {
gst_structure_set (structure, "pointer_y", G_TYPE_DOUBLE,
a * pixbufscale->from_height / pixbufscale->to_height, NULL);
}
break;
default:
break;
}
ret = gst_pad_event_default (pad, event);
gst_object_unref (pixbufscale);
return ret;
}
gboolean
pixbufscale_init (GstPlugin * plugin)
{

29
ext/gdk_pixbuf/pixbufscale.h
View file

@ -25,9 +25,21 @@
#include <gtk/gtk.h>
#include <gst/gst.h>
#include <gst/base/gstbasetransform.h>
G_BEGIN_DECLS
#define GST_TYPE_PIXBUFSCALE \
(gst_pixbufscale_get_type())
#define GST_PIXBUFSCALE(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_PIXBUFSCALE,GstPixbufScale))
#define GST_PIXBUFSCALE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_PIXBUFSCALE,GstPixbufScale))
#define GST_IS_PIXBUFSCALE(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_PIXBUFSCALE))
#define GST_IS_PIXBUFSCALE_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_PIXBUFSCALE))
typedef enum {
GST_PIXBUFSCALE_NEAREST,
GST_PIXBUFSCALE_TILES,
@ -35,27 +47,14 @@ typedef enum {
GST_PIXBUFSCALE_HYPER
} GstPixbufScaleMethod;
#define GST_TYPE_PIXBUFSCALE \
(gst_pixbufscale_get_type())
#define GST_PIXBUFSCALE(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_PIXBUFSCALE,GstPixbufScale))
#define GST_PIXBUFSCALE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_PIXBUFSCALE,GstPixbufScale))
#define GST_IS_PIXBUFSCALE(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_PIXBUFSCALE))
#define GST_IS_PIXBUFSCALE_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_PIXBUFSCALE))
typedef struct _GstPixbufScale GstPixbufScale;
typedef struct _GstPixbufScaleClass GstPixbufScaleClass;
struct _GstPixbufScale {
GstElement element;
GstPad *sinkpad,*srcpad;
GstBaseTransform element;
/* video state */
gboolean inited;
gint to_width;
gint to_height;
gint from_width;
@ -73,7 +72,7 @@ struct _GstPixbufScale {
};
struct _GstPixbufScaleClass {
GstElementClass parent_class;
GstBaseTransformClass parent_class;
};
static GType gst_pixbufscale_get_type(void);